/*#include <stdio.h>
int main()
{
	char a[81];
	int i, offset;
	i = 0;
	while ((a[i] = getchar()) != '\n')
	{
		i++;
	}
	a[i] = '\0';
	scanf("%d", &offset);
	if (offset > 0)
	{
		if (offset >= 26)
		{
			offset = offset % 26;
		}
		for (i = 0; a[i] != '\0'; i++)
		{
			if (a[i] >= 'A' && a[i] <= 'Z')
			{
				if ((a[i] - 'A' + offset) < 26)
				{
					a[i] = a[i] + offset;
					printf("%c\n",a[i]); 
				}
				else
				{
					a[i] = a[i] - 26 + offset;
					
				}
			}
			else
			{
				if (a[i] >= 'a' && a[i] <= 'z')
				{
					if ((a[i] - 'a' + offset) < 26)
					{
						a[i] = a[i] + offset;
							//printf("%c\n",a[i]); 
					}
					else
					{
						a[i] = a[i] - 26 + offset;
					}
				}
			}
		}
	}
	if (offset < 0)
	{
		offset = -offset;
		if (offset >= 26)
		{
			offset = offset % 26;
		}
		for (i = 0; a[i] != '\0'; i++)
		{
			if (a[i] >= 'A' && a[i] <= 'Z')
			{
				if ((a[i] - 'A' - offset) > 0)
				{
					a[i] = a[i] - offset;
				}
				else
				{
					a[i] = 26+a[i]-offset;
				}
			}
			else
			{
				if (a[i] >= 'a' && a[i] <= 'z')
				{
					if ((a[i] - 'a' - offset) >0)
					{
						a[i] = a[i] - offset;
					}
					else
					{
						a[i] =a[i]+26-offset;
					}
				}
			}
		}
	}
	for (i = 0; a[i] != '\0'; i++)
	{
		putchar(a[i]);
	}
	printf("\n");
	return 0;
}*/
#include <stdio.h>
int main()
{
	char a[81]; char b[81];
	int i, j, k = 0, flag = 1;
	i = 0;
	while ((a[i] = getchar()) != '\n')
	{
		i++;
	}
	a[i] = '\0';
	for (i = 0; a[i] != '\0'; i++)
	{
		if (a[i] >= 'A' && a[i] <= 'Z')
		{
			b[k] = a[i];
			k++;
		}
	}
	b[k] = '\0';
	for (i = 0; b[i] != '\0'; i++)
	{
		flag=1;
		for (j =0; j<i; j++)
		{
			if (b[i] == b[j])
			{
				flag = 0;
				break;
			}
		}
			if(flag!=0)
			{
				printf("%c", b[i]);
			}
	}
	if(k==0)
	{
		printf("Not Found");
	}
	printf("\n");
	return 0;
}
